34 The Farmer''s Veterinary Adviser. 



such places as the above. 4. A condition of the sys- 

 tem of the animal predisposing to the reception and 

 gro'\vth of the jjoison, and consistiag in the loading ol 

 the blood with plastic or waste organic matter, as in over- 

 fed plethoric animals, ia those making flesh most rapidly, 

 in the young and rapidly growing, in those rendered un- 

 healthy by overwork, impure air, unsuitable food or 

 water. 5. Sudden chUls when the poison is already pres- 

 ent ; hence, extreme variations in the temperature of night 

 and day. 6. A close, still atmosphere. 



General characters. In the typical cases the blood ia 

 black, tarry and incoagulable, and ia aU it shows broken- 

 up globules, and microscopic rod-like bodies and clear, re- 

 frangent spherules (bacteria) such as appear in putrefying 

 liquids. The spleen, lymphatic glands and liver are en- 

 larged, the mucous membranes of the stomach and intes- 

 tines are usually reddened, thickened, and softened, and 

 any other part of the body may be the seat of bloody or 

 albuminous effusion with a tendency to death, decomposi- 

 tion, the extrication of gases in the tissues and a crackling 

 sound when handled. When it commences in one point 

 on the surface (malignant pustule) there is first an un- 

 healthy eruption of minute blisters which burst, dry up 

 and become gangrenous, while new blisters appear around 

 as the unhealthy action spreads. 



Divisions. The malignant anthrax may be manifested 

 by external disease, or sweUing, or without such appear- 

 ances. To the first class belong the carbuncular erysip- 

 elas of sheep and swine, mahgnant sore-throat of hogs, 

 gloss-anthrax or black-tongue, black-quarter or bloody 

 murrain, the boil plague of Siberia, and the malignant pus- 

 tule of man. To the second belong aU those forms of the 

 disease in which there are the specific changes in the blood, 

 with engorgement of the spleen, blood-staining and exu- 

 dations into internal organs, only. 



